Hi Gaz Tau,
Would love to have your job working in the bush instead of working at a screen...
Ok so you want to take the plunge into photography and i see you started by going the correct root by choosing canon
The canon 1000D is very entry level Canon body and not many people buy them unless they really have too. So my advice on this body is to rather save up some money and buy a better body. Depending on how much you want to spend is another question. If you have a small budget then try go for 450D upwards also try get a (50D) second though as they do not make these bodies anymore (60D) took its place. I started off with the 450D and still love the camera i use it as my second body.
for the lens. My advice is spend more on glass then the body. The lens plays a major part in photography. I would rather spend a little less and get a 450D instead of lets say a 550D and spend the extra cash on the lens. The 70-300 is (if im not mistaken) given as a bundle pack?? If you buying the two as a bundle then i would rather leave it. I would rather for a better lens. I suppose it will be a good start up lens and then grow from there but if you have the money i would rather spend it on better glass e.g.
canon / Sigma 70-200 F4 non IS (Half the price of IS)
Simga 150-500 APO DG
and then when you have the money and feel confident go for a canon prime.
if you use the zoom lens and find all your pictures are taken at full length (i had the 150-500 sigma and i shoot wildlife and birds and found that most of them were shot at 500. I then sold the 150-500 and bought the prime.) then go prime instead of zoom. Prime (fixed length) has better IQ (image quality) over the zoom so i would recommend the 400 F5.6 over the 100-400L from canon. or if you can afford it the 300 F2.8 x 2converter. or the 500mm prime F4
Hope this helps but if you give us a price limit we can help you a lot better...
Canon 5D MK III
, Canon 7D , Canon 450D | Canon 400 F5.6 L
| Canon 70-200 F2.8 L
IS|Sigma 10-200 EX DG OS F4-5.6 & goodies Runner up wildlife photographer of the year 2012-sunday times & winner-Canon S.A. reflection category